system/wine
system/wine
1
0
Fork 0
mirror of git://source.winehq.org/git/wine.git synced 2024-10-03 01:33:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

ddraw: Release only valid texture parents on ddraw_texture_init failure.

Browse source 
When ddraw_texture_init needs to clean up on failure, it will call the
wined3d_texture_get_sub_resource_parent function on draw_texture in
order to retrieve its parent for a IDirectDrawSurface release call.
However, if draw_texture is NULL, then the function call will crash
due to a null pointer dereference.

Therefore, on failure cleanup, the release operation on the texture
parent should only be performed if draw_texture is not NULL.

This fixes a crash in the Virtual Insanity game demo.
This commit is contained in:
Andrew Nguyen 2024-03-13 22:51:23 -05:00 committed by Alexandre Julliard
parent 72fd6e9251
commit 1600f2e6bd
1 changed files with 9 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
dlls/ddraw/surface.c
View file

@ -6519,15 +6519,17 @@ static HRESULT ddraw_texture_init(struct ddraw_texture *texture, struct ddraw *d
fail:
if (draw_texture)
{
wined3d_texture_decref(draw_texture);
parent = wined3d_texture_get_sub_resource_parent(draw_texture, 0);
if (texture->version == 7)
IDirectDrawSurface7_Release(&parent->IDirectDrawSurface7_iface);
else if (texture->version == 4)
IDirectDrawSurface4_Release(&parent->IDirectDrawSurface4_iface);
else
IDirectDrawSurface_Release(&parent->IDirectDrawSurface_iface);
parent = wined3d_texture_get_sub_resource_parent(draw_texture, 0);
if (texture->version == 7)
IDirectDrawSurface7_Release(&parent->IDirectDrawSurface7_iface);
else if (texture->version == 4)
IDirectDrawSurface4_Release(&parent->IDirectDrawSurface4_iface);
else
IDirectDrawSurface_Release(&parent->IDirectDrawSurface_iface);
}
return hr;
}